Information processing apparatus, information processing system, and control method

Patent metadata

Field	Value
Publication number	US-11392240-B2
Application number	US-202117494319-A
Country	US
Kind code	B2
Filing date	Oct 5, 2021
Priority date	Oct 19, 2020
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

An information processing apparatus includes a display, a touch sensor disposed on a screen of the display unit detects an input position by an input medium on the screen, a main controller, and an embedded controller. The embedded controller predicts a subsequent input position of the input medium based on detected input positions of the input medium detected by the touch sensor at predetermined detection intervals, and output, to the main controller, the predicted subsequent input position as part of the detected input positions detected by the touch sensor. The main controller, based on the plurality of detected input positions received from the embedded controller, display a movement trajectory of the input medium on the screen.

First claim

The invention claimed is:

1. An information processing apparatus comprising:
a display;
a touch sensor that is disposed on a screen of the display and that detects an input position by an input medium on the screen;
a main controller that:
comprises a main processor and a main memory, and
executes processing based on an operating system (OS); and

an embedded controller that:
is separate from the main controller,
comprises an embedded processor and an embedded memory,
predicts a subsequent input position of the input medium based on detected input positions of the input medium detected by the touch sensor at predetermined detection intervals, and
outputs, to the main controller, the predicted subsequent input position as part of the detected input positions detected by the touch sensor,

wherein the main controller, based on the plurality of detected input positions received from the embedded controller, displays a movement trajectory of the input medium on the screen.

2. An information processing apparatus comprising:
a display;
a touch sensor that is disposed on a screen of the display and that detects a touch to an object on the screen;
a main controller that executes processing based on an operating system (OS); and
an embedded controller that:
is different from the main controller,
predicts next-time detection position data based on pieces of detection position data on the screen detected by the touch sensor at predetermined detection intervals as a result of touching on the screen with an operation medium, and
outputs, to the main controller, the predicted next-time detection position data as detection position data detected by the touch sensor,

wherein based on the detection position data output from the embedded controller, the main controller displays, on the display, a movement trajectory of the operation medium moved on the screen while touching on the screen.

3. The information processing apparatus according to claim 2 , wherein the embedded controller switches between outputting or not outputting the predicted next-time detection position data as the detection position data according to predetermined executability conditions.

4. The information processing apparatus according to claim 3 , wherein
the executability conditions comprise a case where a distance between detection positions in the pieces of detection position data is a predetermined threshold distance or more, and
when the distance between detection positions is the predetermined threshold distance or more, the embedded controller outputs the predicted next-time detection position data as the detection position data.

5. The information processing apparatus according to claim 3 , wherein
the executability conditions comprise a case where a change in moving angle of the operation medium at each of the predetermined detection intervals based on the pieces of detection position data is a predetermined threshold value or more, and
when the change in moving angle is the predetermined threshold value or more, the embedded controller:
outputs latest detection position data detected by the touch sensor as the detection position data, and
fails to output the predicted next-time detection position data as the detection position data.

6. The information processing apparatus according to claim 3 , wherein
the touch sensor detects a touch pressure of the operation medium on the screen together with the detection position data,
the executability conditions comprise a case where each of drops in the touch pressure corresponding to the pieces of detection position data is a predetermined reference value or more, and
when the touch pressure drop is the predetermined reference value or more, the embedded controller:
outputs latest detection position data detected by the touch sensor as the detection position data, and
fails to output the predicted next-time detection position data as the detection position data.

7. The information processing apparatus according to claim 2 , wherein
the main controller monitors applications executed on the operating system, and
when an application inside which next-time detection position data is predicted is launched, the main controller transmits, to the embedded controller, a notification to limit prediction processing for predicting the next-time detection position data, and
the embedded controller limits the prediction processing in response to the notification to limit the prediction processing.

8. The information processing apparatus according to claim 7 , wherein
the notification to limit the prediction processing comprises a notification to stop the prediction processing, and
the embedded controller:
stops the prediction processing in response to the notification to stop a function of the prediction processing, and
outputs latest detection position data detected by the touch sensor as the detection position data.

9. A control method of an information processing apparatus comprising:
a display;
a touch sensor that is disposed on a screen of the display and that detects a touch to an object on the screen;
a main controller that executes processing based on an operating system (OS); and
an embedded controller that is different from the main controller,

the control method comprising:
predicting next-time detection position data:
based on pieces of detection position data on the screen, and
detected by the touch sensor at predetermined detection intervals as a result of touching on the screen with an operation medium, and

outputting, to the main controller, the predicted next-time detection position data as detection position data detected by the touch sensor; and
displaying, on the display, a movement trajectory of the operation medium moved on the screen while touching on the screen based on the detection position data output from the embedded controller.

Assignees

• Lenovo Singapore Pte Ltd

Inventors

• Yao Qiang
• Suzuki Yoshitsugu
• Nomura Ryohta
• Kawano Seiichi

Classifications

• G06F2203/04105

  Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/04883

  for inputting data by handwriting, e.g. gesture or text · CPC title